SOLUTION: Solve. A= 1/2h(b1+b2) for h NOTE!: (the numbers after the two b's in the forumla are exponents) thank you!

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Question 23481: Solve.
A= 1/2h(b1+b2) for h
NOTE!: (the numbers after the two b's in the forumla are exponents)
thank you!
Answer by rapaljer(4551) About Me  (Show Source):
You can put this solution on YOUR website!
I am quite sure in this problem that the 1 and the 2 after the two b's are SUBSCRIPTS, not exponents.

With that assumption, your equation is
A=+%281%2F2%29%2Ah%2A%28b%5B1%5D%2Bb%5B2%5D%29, solve for h.

(This is the formula for the area of a trapezoid!!)
The first step is to clear the fraction by multiplying both sides by the denominator which is 2.
2%2AA=+2%2A%281%2F2%29%2Ah%2A%28b%5B1%5D%2Bb%5B2%5D%29
2%2AA=+h%2A%28b%5B1%5D%2Bb%5B2%5D%29

Next, since h is MULTIPLIED by the quantity with the b's, you must DIVIDE both sides of the equation by that quantity:
%282%2AA%29%2F%28b%5B1%5D%2Bb%5B2%5D%29=+%28h%2A%28b%5B1%5D%2Bb%5B2%5D%29%29%2F%28b%5B1%5D%2Bb%5B2%5D%29+

Final answer is h+=+%282A%29%2F%28b%5B1%5D+%2Bb%5B2%5D%29

R^2 at SCC